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问题 单项选择题

变形测量的基准点应定期复测。复测周期应视基准点所在位置的稳定情况确定，在建筑施工过程中宜（）复测一次，点位稳定后宜每季度或每半年复测一次。

A.7天

B.1-2个月

C.2-3个月

D.15天

答案

参考答案：C

多项选择题 案例分析题

某患儿，有发绀。查体：杵状指；胸骨左缘第2、3肋间闻及收缩期喷射性杂音。超声诊断为法洛四联症。

需要与法洛四联症鉴别的先天畸形有（）。

A.法洛三联症

B.法洛五联症

C.巨大室间隔缺损合并艾森门格综合征（EisenmengersyndromE.

D.右心室双出口

E.主动脉窦瘤

F.永存动脉干
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填空题


Throughout history has (1) changed his physical environment in order to improve his (2) of life. With the tools of technology he has (3) many physical features of the earth. He has (4) woodlands and prairies into farms and made lakes and reservoirs (5) of rivers for irrigation purposes or hydroelectric (6) . Man has also modified the face of the earth by (7) marshes and cutting through mountains to (8) roads and railways.
However, man’s (9) to the physical environment have not always had beneficial results. Today, (10) of the air and water is an increasing danger to the health of the (11) . Each day thousands of tons of gases come out of the exhausts of motor vehicles. (12) from factories pollutes the air of industrialized areas and the surrounding (13) of the countryside. The pollution of water is equally harmful. The whole ecological (14) of the sea is being changed and (15) wastes have already made many rivers lifeless.
Now (16) protection is more pressing than ever before. As we know, massive destruction of the environment has brought about (17) effects and even poses a great (18) to man’s existence. Indifference to these problems will mean committing suicide. Therefore, effective (19) should be taken and laws passed to (20) the environment. Otherwise, man is certain to suffer from the serious consequences caused by this lack of care for his living surroundings.
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